Idle speed screw fell out???

[Caesar!]

I am looking at my 78 Spider and it has the two 40DCOE Webbers on it, and I'm trying to find out if it's possible that my Carb closest to the front of the cars nose.. seems to have no Idle Speed adjusmtent screw!!! Could it have wiggled out and fallen out??... I just bought this car, and wanted to just increase the idle a bit from 600 rpm to 850 or so.

Anyone have a really good Webber diagrahm. I see a screw that is in the middle of the two Webbers, and is this screw the Idle adjustment screw for the both carbs? Or do each individual carbs have their own Idle speed adjustment screw? (I believe each carb has their own, but I could be wrong) The car runs great though..Where should I be looking? Is there one screw in the middle for Idle adjustment?

Hope I could be more clear in my description..

[alfaed]

Twin webers only have one idle adjustment between the two carbs, i've attached a short procedure/drawing of the adjustment screws

http://hem.passagen.se/veloce/MECH13.HTM

[Caesar!]

Yes there is a screw right in the middle between the two carbs..

Thank you for point that out for me, and Thank you for the link.

I am amazed how this car sounds, and how it drives.. I just can't believe how a little 2Litre engine hauls. It is definitely a little Hot Rod. I have a 73 Vette with a 388 Stroker roller motor, and an 81 Z28 now with a 454 LS7 going in it. This Spider I just bought was purely on looks, and interior. I really didn't think they went this hard, and were this enjoyable to drive. As funny as it seems. I'm more hooked on this Alfa now than my other vehicles. It is truly an underatted car!

[papajam]

I'm afraid Caeser that you've been infected with the Alfa Virus.

Fortunately, there is no known cure.

[torcia]

Jim,

My wife would say UNFORTUNATELY............there is no cure.

[Caesar!]

Well if this is a virus for opening my eyes to a history that goes deep into motor racing, and keeps me hollering as I floor it to redline in this enthusiastic charger of a car that just won't quit, and listen to the HOWL of those webbers... I Like It!!!! LOL LOL